CN215812173U - Sheet spring fatigue testing machine - Google Patents
Sheet spring fatigue testing machine Download PDFInfo
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- CN215812173U CN215812173U CN202122280133.7U CN202122280133U CN215812173U CN 215812173 U CN215812173 U CN 215812173U CN 202122280133 U CN202122280133 U CN 202122280133U CN 215812173 U CN215812173 U CN 215812173U
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- leaf spring
- pressure plate
- testing
- testing machine
- testing tool
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Abstract
The utility model belongs to the technical field of leaf spring fatigue tests, and particularly relates to a leaf spring fatigue testing machine which comprises a testing mechanism and a power mechanism, wherein the testing mechanism comprises an upper pressure plate and a lower pressure plate, a columnar upper testing tool is arranged at the bottom of the upper pressure plate, a columnar lower testing tool is arranged on the lower pressure plate, the upper testing tool and the lower testing tool are arranged in a staggered manner, and the upper testing tool and the lower testing tool can be detached; the leaf spring can be fixed to lower experimental frock, and the lower holding disk can move up and down under the effect of power unit in below. The power mechanism comprises an eccentric wheel, the eccentric wheel is rotatably connected with one end of a connecting rod through a hinged disc arranged on the eccentric wheel, the other end of the connecting rod is rotatably connected to the bottom of the lower pressure plate, and the eccentric distance of the hinged disc is adjustable. Because the blade spring shape is changeable, the utility model discloses a dedicated experimental frock has been designed for blade spring fatigue testing machine can simulate blade spring's operating condition, adjusts the lead screw and can freely adjust the amplitude, and the range of application is wide.
Description
Technical Field
The utility model relates to a sheet spring fatigue testing machine, and belongs to the technical field of leaf spring fatigue tests.
Background
The leaf spring is the simplest spring that generates spring characteristics by utilizing the deformation of the elastic metal sheet. After the production of the leaf spring, a fatigue test is carried out to verify the fatigue life of the leaf spring. The sheet spring fatigue testing machine is developed in order to better perform fatigue tests on various sheet springs because the sheet springs are changeable in shape and are not easy to perform fatigue tests.
SUMMERY OF THE UTILITY MODEL
According to the defects in the prior art, the technical problems to be solved by the utility model are as follows: the defect of the prior art is overcome, and the sheet spring fatigue testing machine can simulate the working states of sheet springs with different shapes to vibrate and can freely adjust the test amplitude.
The sheet spring fatigue testing machine comprises a testing mechanism and a power mechanism, wherein the testing mechanism comprises an upper pressure plate and a lower pressure plate, a columnar upper testing tool is arranged at the bottom of the upper pressure plate, a columnar lower testing tool is arranged on the lower pressure plate, the upper testing tool and the lower testing tool are arranged in a staggered manner, and the upper testing tool and the lower testing tool can be detached; the leaf spring can be fixed to lower experimental frock, and the lower holding disk can move up and down under the effect of power unit in below.
Before the test, the sheet-type spring can be fixed to a test station, the test machine is started, and the lower pressing disc moves up and down under the action of the power mechanism to simulate the working state of the sheet-type spring.
The upper pressure plate and the lower pressure plate are arranged on the optical axis slide rail in a sliding mode, the upper pressure plate can be lifted, the upper pressure plate is connected with the lead screw, the upper end of the lead screw penetrates through the top of the rack, and nuts and hand wheels are arranged on the inner side and the outer side of the rack on the lead screw respectively.
Preferably, calipers are arranged on one sides of the upper pressing plate and the lower pressing plate, and the correct installation height of the upper pressing plate is displayed through the calipers.
The power mechanism comprises an eccentric wheel, the eccentric wheel is rotatably connected with one end of a connecting rod through a hinge plate arranged on the eccentric wheel, and the other end of the connecting rod is rotatably connected with the bottom of a lower pressure plate.
Wherein the eccentricity of the hinged disk is adjustable.
Specifically, the hinged disc is in threaded connection with a lead screw, and the lead screw is rotatably arranged on the eccentric wheel.
Preferably, one side of the screw rod is provided with a scale.
Compared with the prior art, the utility model has the beneficial effects that:
because the shape of the leaf spring is changeable, the leaf spring fatigue testing machine provided by the utility model designs a special testing tool for the leaf spring, so that the leaf spring fatigue testing machine can simulate the working state of the leaf spring; and moreover, the amplitude can be freely adjusted by adjusting the lead screw, so that the applicability is strong and the application range is wide.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: a hand wheel 1; a nut 2; a screw rod 3; an upper platen 4; an optical axis slide rail 5; a lower platen 6; a leaf spring 7; an upper test tool 8; a lower test fixture 9; a caliper 10; a connecting rod 11; an eccentric wheel 12; a hinged disk 13; a lead screw 14; a scale 15.
Detailed Description
The utility model is further described below with reference to examples:
as shown in fig. 1, the sheet spring fatigue testing machine of the present invention comprises a testing mechanism and a power mechanism, wherein the testing mechanism comprises an upper platen 4 and a lower platen 6, a columnar upper testing fixture 8 is arranged at the bottom of the upper platen 4, a columnar lower testing fixture 9 is arranged on the lower platen 6, the upper testing fixture 8 and the lower testing fixture 9 are arranged in a staggered manner, and both the upper testing fixture 8 and the lower testing fixture 9 can be detached; the leaf spring 7 can be fixed on the lower test tool 9, and the lower pressing disc 6 can move up and down under the action of a power mechanism below.
Wherein, go up pressure disk 4 and lower pressure disk 6 and all slide and set up on optical axis slide rail 5, go up pressure disk 4 liftable, go up pressure disk 4 and connect lead screw 3, the frame top is run through to lead screw 3 upper end, and on lead screw 3, the inside and outside both sides of frame are equipped with nut 2 and hand wheel 1 respectively.
In this embodiment, in order to better control the installation height, calipers 10 are provided on the sides of the upper platen 4 and the lower platen 6.
The power mechanism of the embodiment comprises an eccentric wheel 12, the eccentric wheel 12 can be driven by a motor, a motor and the like, the eccentric wheel 12 is rotatably connected with one end of a connecting rod 11 through a hinge plate 13 arranged on the eccentric wheel, and the other end of the connecting rod 11 is rotatably connected with the bottom of the lower pressure plate 6.
Wherein the eccentricity of the articulated disk 13 is adjustable.
Specifically, the hinge plate 13 is in threaded connection with a lead screw 14, and the lead screw 14 is rotatably disposed on the eccentric wheel 12.
For a more intuitive adjustment of the eccentricity, a scale 15 is provided on the side of the spindle 14.
The working principle of the utility model is as follows:
according to the process requirement, the screw rod 14 is rotated to adjust the eccentricity of the hinged disk 13, so that the amplitude is adjusted, and the eccentricity can be visually seen through the scale 15 on one side. After the amplitude is adjusted, the eccentric wheel 12 is rotated to enable the connecting rod 11 to be in the center position, and the eccentric wheel 12 is fixed well through a positioning pin and the like. And loosening the nut 2 on the screw rod 3 at the upper part of the main machine, adjusting the upper pressure plate 4 by using the hand wheel 1, installing the test tool, and fixing the plate-type spring 7 on the test station. And rotating the hand wheel 1 in the opposite direction to adjust the upper pressure plate downwards, displaying the correct installation height through the caliper 10, and screwing the nut 2 after the installation height is in place. The fixing of the eccentric wheel 12 is released, the testing machine is started, and the lower pressing disc 6 moves up and down under the action of the power mechanism to simulate the working state of the leaf spring. The sheet spring fatigue testing machine can accurately achieve the decimal point back digit with the amplitude and the mounting height, so that the experimental result is more accurate.
Part of the test results:
the model 202008015 leaf spring operates for 548.2 hours, the amplitude is 5.2mm, and no fracture occurs after 2300 ten thousand times.
Model 202101012 leaf spring operates for 111.2 hours, the end part moves down within 5mm from 0, no fracture occurs 1000 ten thousand times.
Model 202101013 leaf spring operates for 111.2 hours, the end moves down within 5mm from 0, no fracture for 1000 ten thousand times.
Claims (7)
1. The utility model provides a sheet spring fatigue testing machine which characterized in that: the device comprises a testing mechanism and a power mechanism, wherein the testing mechanism comprises an upper pressure plate (4) and a lower pressure plate (6), a columnar upper testing tool (8) is arranged at the bottom of the upper pressure plate (4), a columnar lower testing tool (9) is arranged on the lower pressure plate (6), the upper testing tool (8) and the lower testing tool (9) are arranged in a staggered manner, and the upper testing tool (8) and the lower testing tool (9) can be detached; the leaf spring (7) can be fixed on the lower test tool (9), and the lower pressing disc (6) can move up and down under the action of a power mechanism below.
2. The leaf spring fatigue testing machine according to claim 1, wherein: go up pressure disk (4) and lower pressure disk (6) all slide and set up on optical axis slide rail (5), go up pressure disk (4) liftable, go up pressure disk (4) and connect lead screw (3), lead screw (3) upper end runs through the frame top, on lead screw (3), the inside and outside both sides of frame are equipped with nut (2) and hand wheel (1) respectively.
3. The leaf spring fatigue testing machine according to claim 1 or 2, characterized in that: calipers (10) are arranged on one sides of the upper pressing disc (4) and the lower pressing disc (6).
4. The leaf spring fatigue testing machine according to claim 1, wherein: the power mechanism comprises an eccentric wheel (12), the eccentric wheel (12) is rotatably connected with one end of a connecting rod (11) through a hinged disc (13) arranged on the eccentric wheel, and the other end of the connecting rod (11) is rotatably connected with the bottom of the lower pressure plate (6).
5. The leaf spring fatigue testing machine according to claim 4, wherein: the eccentricity of the articulated disk (13) is adjustable.
6. The leaf spring fatigue testing machine according to claim 5, wherein: the hinged disc (13) is in threaded connection with a lead screw (14), and the lead screw (14) is rotatably arranged on the eccentric wheel (12).
7. The leaf spring fatigue testing machine according to claim 6, wherein: and one side of the screw rod (14) is provided with a scale (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122280133.7U CN215812173U (en) | 2021-09-18 | 2021-09-18 | Sheet spring fatigue testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122280133.7U CN215812173U (en) | 2021-09-18 | 2021-09-18 | Sheet spring fatigue testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215812173U true CN215812173U (en) | 2022-02-11 |
Family
ID=80164585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122280133.7U Active CN215812173U (en) | 2021-09-18 | 2021-09-18 | Sheet spring fatigue testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215812173U (en) |
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2021
- 2021-09-18 CN CN202122280133.7U patent/CN215812173U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 255030 No. 17 Rising Road, Zhangdian District, Zibo City, Shandong Province Patentee after: Shandong Lianmei Spring Co.,Ltd. Address before: 255030 No. 17 Rising Road, Zhangdian District, Zibo City, Shandong Province Patentee before: SHANDONG LIANMEI SPRINGS TECHNOLOGY Corp. |
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| CP01 | Change in the name or title of a patent holder |